20世纪90年代开始不断涌现提供通信和网络服务的卫星星座,它们是由运行在低地球轨道的小卫星构成。其中运行的有66颗卫星的铱星(Iridium)、48颗卫星全球星(Globalstar)、28颗卫星的专注于货运监控的轨道通信(Orbcomm)。三个星座部署实施后,都因亏损而进行了破产保护。另一个后发的规模更大的用于宽带的互联网接入服务的840颗卫星的“泰利迪斯”(Teledesic)星座(后来调整为288颗卫星),却并未实施就宣告撤消。 Beginning in the 1990s satellite constellations of communications and network services have emerged, consisting of small satellites operating in low Earth orbit. Which runs Iridium with 66 satellites, 48 ​​Globalstar satellites and 28 satellites Orbcomm specializing in freight monitoring. After the implementation of the three constellations, they all went bankrupt for losses. Another Teledesic constellation of 840 satellites (later adjusted to 288 satellites), which was later issued, for the larger Internet access service for broadband, was declared withdrawn without implementation.